The Beauty of Calibre is you DO NOT have to do it JUST my way.
(This was just what I wanted to store)
The Column
Label can be anything.
It can be changed at a later time. (
Keep i short so thew column does not get wide just to show the label)
OTOH The field TYPE can't. Which is why I suggest you give True/False a future use
think before going down that path
